Sliding-door lock.



A. ROSENQUIST SLIDING DOOR LOCK.

APPLIOATION FILED 0019, 1913.

1,096,759, Patented May12,191L

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ANTON ROSENQUIST, OF SUPERIOR, WISCONSIN.

SLIDING-DOOR LOCK.

Specification of Letters Patent.

Patented May 12, 1914.

Application filed. October 9, 1913. Serial N 0. 794,302.

To all whom it may concern Be it known that I, ANTON ROSENQUIST, a citizen of the United States, residing at Superior, in the county of Douglas and State of Wisconsin, have invented new and useful Improvements in Sliding-Door Locks, of which the following is a specification.

This invention has relation to looks es pecially adapted to be used upon sliding doors as for instance cars and warehouse doors and it consists in the novel features hereinafter described and claimed.

An object of the invention is to provide a lock adapted to be used as indicated which is of simple and durable structure and having its parts so disposed that the casing of the lock will accumulate little if any dust or dirt.

A still further object of the invention is to provide a lock of the character indicated with a tumbler mounted for movement in the casing and adapted to be drawn to a position to engage the bolt by the attraction of gravity the said tumbler being provided at its upper end with a laterally. disposed shoulder or portion against which a key of especial design is adapted to operate for the purpose of lifting the tumbler out of engagement with the bolt.

In the accompanying drawing: Figure 1 is a side elevation of the lock with parts re moved. Fig. 2 is a similar view showing the tumbler in retracted position. Fig. 3 is a vertical transverse sectional view of the lock. Fig. 4 is a perspective view of a plate used in combination with the lock.

The lock comprises a casing which consists of a plate 1 having at one end a flange 2 extending transversely across the same and being provided at its opposite ends with recesses 3. The plate 1 is provided at one side with a transversely disposed channel 4 which is adapted to receive the bolt as will be hereinafter explained. The plate 1 is further provided with a recess 5 the linear dimension of which is disposed approximately at a right angle to the linear dimension of the channel 1 and that end of the recess 5 which is remote from the channel 1 is enlarged at one side as at 6. A curved opening 7 leads into the enlargement 6 from one of the side edges of the plate 1 and the said opening 7 is disposed in a downward direction from the enlargement 6. The lower wall of the enlargement 6 is also downwardly inclined as clearly shown in Fig. l of the drawing. The casing further includes a plate 8 which is provided at its side with lugs 9 adapted to fit snugly in the recesses 3. Rivets or other suitable securing devices indicated at 10 are employed for the purpose of holding the plates 1 and 8 in proper relation with respect to each other. One end of the plate 8 bears against the edge of the flange 2 and when the case is positioned upon the frame of a door, the said flange 2 is at the upper end of the casing.

A tumbler 11 is slidably mounted in the recess 5 and is chamfered or beveled as at 12 at its lower end. The said tumbler is provided at its upper end and at one edge portion with a laterally disposed shoulder 13 which enters the enlargement (3 of the recess 5. The vertical height of the shoulder 13 is less than the vertical length of the enlargement 6 consequently the tumbler 11 may move longitudinally along the recess 5. l/Vhen the tumbler is in its uppermost position in the said recess the lower end of the beveled portion 12is above the upper edge or side of the channel 1. lVhen the said. tumbler is in its lowermost position the shoulder 13 comes in contact with the bottom wall of the enlargement (3 of the recess 5 and the beveled end 12 of the said tumbler lies in the upper portion of the channel 4;. A plate 14 is bolted or otherwise secured to the door and the said plate is provided at one end with an upstanding lug 15. A bolt 16 is pivotally mounted upon the plate 1 1 and is provided at one end with a notch 17 the wall of which is adapted to encounter the lower edge of the lug 15 and when thus engaged the long dimension of the bolt 16 is approximately parallel with the long dimension of the plate 1 1. The ends of the bolt 16 opposite that end thereof which is provided with the notch 17 taking the point of pivotal connection between the said bolt and the plate 14, is longer than the notched end and the longer end of the said bolt is pointed as at 18. The bolt 16 is further provided in its upper edge and at its longer end portion with a notch 19 which is adapted to receive the lower ends of the tumbler 11 after bolt is in position in the channel 4. The

pointed end portion of the bolt 16 provided with an opening 21 through whleh the bail of a seal may be passed when it 1s de sired to insure that the contents of the car or warehouse have not been tampered with without revealing the fact.

A key 22 is especially designed to be used in combination with the lock hereinbefore described and the said key comprises a compound curved resilient shank 23 which is adapted to be inserted through the key opening 7 and which may engage the shoulder 13 of the tumbler 11 and lift the said tum- I bler. The curvature of the shank 23 is such that when the tumbler is in an elevated position and the outer portion of the key isQ moved toward the side edge of the plate 1 i the weight of the tumbler 11 bearing upon the inner end of the key and the frictional contact between the side of the shank 23: and the wall of the opening 7 will be sufiicient to hold the said tumbler in an ele-i As soon as the lower end g of the key is swung in an outward direction and the shank of the key is withdrawn from 1 the opening 7 the said tumbler is free tofall provided there is no portion of the: bolt 16 in the channel 4: against which the lower end of the said tumbler may have able features found in many locks of this vated position.

contact.

The operation of the lock is as follows. Presuming that the tumbler 11 is in its lowermost position in the recess 5 andthe door to which the bolt 16 is attached is moved toward the plate 1 the pointed end portion of the bolt 16 enters the channel 4 and passes under the inclined or beveled end 12 of the tumbler. As the bolt continues to move under the tumbler the tumbler is raised and as soon as the notch 19 comes in register with the lower end of the recess 5 the tumbler 11 falls by gravity and enters the notch whereby the bolt is held with relation to the plate 1. The link 20 is then slipped over the pointed end portion of the bolt and the bail of the seal is inserted through the opening 21 and the seal is applied. l/Vhen it is desired to disconnect the bolt 16 from the tumbler 11 the bail of the seal is broken and the link 20 is slipped from off of the pointed end of the bolt 16. The key 22 is then used and its curved shank 23 is inserted through the opening 7 until the end of the shank comes into contact with the lower edge of the shoulder 13. By forcing the key in an upward direction and swmgmg the lower end thereof toward the side edge of the plate 1 the tumbler 11 is lifted in the recess 5 until its lower end is moved above the upper Wall of the chan nel 1. When the parts are in this position the tumbler 11 is held in an elevated position so long as the key 22 remains in the opening 7 as has been hereinbefore explained. By moving the door away from the plate 1 the bolt 16 is then readily withdrawn from the channel 4 and the door may be moved to an open position at the door opening. As soon as the key 23 is withdrawn from the opening 7 the tumbler 11 falls to its normal position in the recess 5.

When the door to which the bolt 16 is ap- I plied is in an open position and itis clesired to remove the pointed end portion 18 of the bolt 16 from the door opening this may be readily done by swinging or turning the bolt 16 upon its point of pivotal con- 7 nection with the plate 14: so that the notch 17 is moved away from the lug 15 and the edge portion of the longer end part of the said bolt 15 is swung into engagement with the upper edge portion of the said lug 15.

Thus the said bolt 16 is removed from the door opening and large stock may pass freely through the door opening without being injured by coming in contact with the projecting portion of the bolt 16.

From the above description taken in connection with the accompanying drawing it will be seen that an automatic lock of simple structure is provided and that the parts so assembled as to be easily and quickly operated or manipulated and that objectionan enlargement, the casing being further provided with a curved key opening which enters the enlargement at the bottom wall thereof and from one side of the casing, "a tumbler slidably mounted in the recess and provided at its side with a shoulder which enters the enlargement of the recess, the

vertical length of the shoulder being less than the vertical length of the enlargement of the recess and a key having a compound curved shank adapted to be inserted through the key opening into the enlargement and in engagement with the shoulder for the purpose of lifting the tumbler.

2. A look comprising a casing provided with a bolt channel and having a tumbler the tumbler said bolt also having at one end movably mounted therein and adapted to a notch adapted to engage the 111g. 10 enter the channel, a plate adapted to be In testimony whereof I aflix my signasecured to a movable object, said plate havture in presence of two Witnesses.

ing at one end a lug, a bolt pivoted upon the ANTON ROSENQUIST. plate and having a pointed end portion Witnesses:

adapted to enter the channel, said bolt be- NELs. NELSON,

ing provided with a notch adapted to receive CLIFFORD NELSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

